Corrosion Behavior of Glass Coated Hastelloy-XR in Boiling Sulfuric Acid

Rong Tu; Takashi Goto; Lidong Chen; Toshio Hirai; Lianmeng Zhang

doi:10.2320/matertrans.42.2093

Rong Tu, Takashi Goto, Lidong Chen, Toshio Hirai, Lianmeng Zhang

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Keywords: glass coating, Hastelloy-XR, sulfuric acid, corrosion behavior, Iodine-Sulfur process, thermochemical hydrogen production

JOURNAL FREE ACCESS

2001 Volume 42 Issue 10 Pages 2093-2097

DOI https://doi.org/10.2320/matertrans.42.2093

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Abstract

Hastelloy-XR alloy was coated with glasses to improve the corrosion resistance in boiling sulfuric acid for application in thermochemical hydrogen production process. Pre-oxidation of Hastelloy-XR alloy enabled one to produce well-adhered glass coating. The glass composition with the highest corrosion resistance was 48SiO₂–8B₂O₃–6Al₂O₃–11CaO–25BaO–2ZnO . The glass-coated Hastelloy-XR alloy showed almost no mass change in boiling sulfuric acid of 40 to 80% aqueous solution at 408 to 503 K after 43 ks.

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